Page 1
XV-S40BK/XV-S42SL/XV-S45GD/XV-S30BK
1-2
Safety Precautions
1. This design of this product contains special hardware and many circuits and components specially
for safety purposes. For continued protection, no changes should be made to the original design
unless authorized in writing by the manufacturer. Replacement parts must be identical to those
used in the original circuits. Services should be performed by qualified personnel only.
2. Alterations of the design or circuitry of the product should not be made. Any design alterations of
the product should not be made. Any design alterations or additions will void the warranty
and will further relieve the manufacture of responsibility for personal injury or property damage
resulting therefrom.
3. Many electrical and mechanical parts in the products have special safety-related characteristics.
These characteristics are often not evident from visual inspection nor can the protection afforded
by them necessarily be obtained by using replacement components rated for higher voltage,
wattage, etc. Replacement parts which have these special safety characteristics are identified in
the Parts List of Service Manual. Electrical components having such features are identified by
shading on the schematics and by ( ) on the Parts List in the Service Manual. The use of a
substitute replacement which does not have the same safety characteristics as the recommended
replacement parts shown in the Parts List of Service Manual may create shock, fire, or other
hazards.
4. The leads in the products are routed and dressed with ties, clamps, tubings, barriers and the
like to be separated from live parts, high temperature parts, moving parts and/or sharp edges
for the prevention of electric shock and fire hazard. When service is required, the original lead
routing and dress should be observed, and it should be confirmed that they have been returned
to normal, after reassembling.
5. Leakage current check (Electrical shock hazard testing)
After reassembling the product, always perform an isolation check on the exposed metal parts of
the product (antenna terminals, knobs, metal cabinet, screw heads, headphone jack, control
shafts, etc.) to be sure the product is safe to operate without danger of electrical shock.
Do not use a line isolation transformer during this check.
Plug the AC line cord directly into the AC outlet. Using a "Leakage Current Tester", measure
the leakage current from each exposed metal parts of the cabinet , particularly any exposed
metal part having a return path to the chassis, to a known good earth ground. Any leakage
current must not exceed 0.5mA AC (r.m.s.)
Alternate check method
Plug the AC line cord directly into the AC outlet. Use an AC voltmeter having, 1,000 ohms
per volt or more sensitivity in the following manner. Connect a 1,500 10W resistor paralleled by
a 0.15 F AC-type capacitor between an exposed
metal part and a known good earth ground.
Measure the AC voltage across the resistor with the
AC voltmeter.
Move the resistor connection to each exposed
metal part, particularly any exposed metal part
having a return path to the chassis, and measure
the AC voltage across the resistor. Now, reverse
the plug in the AC outlet and repeat each
measurement. voltage measured Any must not
exceed 0.75 V AC (r.m.s.). This corresponds to 0.5
Warning
1. This equipment has been designed and manufactured to meet international safety standards.
2. It is the legal responsibility of the repairer to ensure that these safety standards are maintained.
3. Repairs must be made in accordance with the relevant safety standards.
4. It is essential that safety critical components are replaced by approved parts.
5. If mains voltage selector is provided, check setting for local voltage.
Good earth groundPlace this
probe on
each exposed
metal part. AC VOLTMETER
(Having 1000
ohms/volts,
or more sensitivity)
1500 10W
0.15 F AC TYPE
!
CAUTION Burrs formed during molding may be left over on some parts of the chassis. Therefore,
pay attention to such burrs in the case of preforming repair of this system.
Page 2
XV-S40BK/XV-S42SL/XV-S45GD/XV-S30BK
1-3
Preventing static electricity
Electrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc. is discharged,
can destroy the laser diode in the traverse unit (optical pickup). Take care to prevent this when performing repairs.
1.1. Grounding to prevent damage by static electricity
Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as DVD players.
Be careful to use proper grounding in the area where repairs are being performed.
1.1.1. Ground the workbench
1. Ground the workbench by laying conductive material (such as a conductive sheet) or an iron plate over
it before placing the traverse unit (optical pickup) on it.
1.1.2. Ground yourself
1. Use an anti-static wrist strap to release any static electricity built up in your body.
1.1.3. Handling the optical pickup
1. In order to maintain quality during transport and before installation, both sides of the laser diode on the
replacement optical pickup are shorted. After replacement, return the shorted parts to their original condition.
(Refer to the text.)
2. Do not use a tester to check the condition of the laser diode in the optical pickup. The tester's internal power
source can easily destroy the laser diode.
1.2. Handling the traverse unit (optical pickup)
1. Do not subject the traverse unit (optical pickup) to strong shocks, as it is a sensitive, complex unit.
2. Cut off the shorted part of the flexible cable using nippers, etc. after replacing the optical pickup. For specific
details, refer to the replacement procedure in the text. Remove the anti-static pin when replacing the traverse
unit. Be careful not to take too long a time when attaching it to the connector.
3. Handle the flexible cable carefully as it may break when subjected to strong force.
4. It is not possible to adjust the semi-fixed resistor that adjusts the laser power. Do not turn it
Conductive material
(conductive sheet) or iron plate (caption)
Anti-static wrist strap
Page 22
XV-S40BK/XV-S42SL/XV-S45GD/XV-S30BK
1-23
CLK
ADO
LCKE
CLK CKE CS RAS CAS WE L(U)DQMLRAS LCBR LWE LCAS
LWCBRLDQMLW E
LDQM
DQI
LCBR
LRAS
Bank Select
Address Register Row Decoder
Col.Buffer
Output Buffer
I/O Control
Row Buffer
Refresh Counter
Data input register
512K x 16
512K x 16
Sense AMP
Column decoder
Latency & burst length
Programming register
Timing register
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
2550
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26 VDD
DQ0
DQ1
VSSQ
DQ2
DQ3
VDDQ
DQ4
DQ5
VSSQ
DQ6
DQ7
VDDQ
LDQM
WE
CAS
RAS
CS
A11
A10
A0
A1
A2
A3
VDDVSS
DQ15
DQ14
VSSQ
DQ13
DQ12
VDDQ
DQ11
DQ10
VSSQ
DQ9
DQ8
VDDQ
NC
UDQM
CLK
CKE
NC
A9
A8
A7
A6
A5
A4
VSS
1.Terminal Layout
2.Block Diagram
3.Pin Function
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25VDD
DQ0
DQ1
VSSQ
DQ2
DQ3
VDDQ
DQ4
DQ5
VSSQ
DQ6
DQ7
VDDQ
LDQM
WE
CAS
RAS
CS
A11
A10
A0
A1
A2
A3
VDD26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50VSS
A4
A5
A6
A7
A8
A9
NC
CKE
CLK
UDOM
NC
VDDQ
DQ8
DQ9
VSSQ
DQ10
DQ11
VDDQ
DQ12
DQ13
VSSQ
DQ14
DQ15
VSS Power Supply
Data Input/Output
Data Input/Output
To Ground
Data Input/Output
Data Input/Output
Power Supply
Data Input/Output
Data Input/Output
To Ground
Data Input/Output
Data Input/Output
Power Supply
Data Input/Mask Output
Write Enable
Column Address Strobe
Raw Address Strobe
Chip Select
Address
Address
Address
Address
Address
Address
Power SupplyTo Ground
Address
Address
Address
Address
Address
Address
Non Connection
Clock Enable
System Clock
Data Input/Mask Output
Non Connection
Power Supply
Data Input/Output
Data Input/Output
To Ground
Data Input/Output
Data Input/Output
Power Supply
Data Input/Output
Data Input/Output
To Ground
Data Input/Output
Data Input/Output
To Ground
Pin No. Symbol Function Pin No. Symbol Function
KM416S1120DT-G8(IC504,IC505):DRAM
Page 34
XV-S40BK/XV-S42SL/XV-S45GD/XV-S30BK
1-35
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128O
O
-
-
O
O
O
-
-
O
O
O
O
O
O
-
-
O
O
O
I
-
-
I
-
I
I
I
I
I
-
-
I
O
O
O
O
O
-
-
I/O
O
O
-
Pin No. Symbol
MADDR6
MADDR5
VDD
VSS
MADDR4
MWE
SD-CAS
VDD
VSS
SD-RAS
SD-CS0
SD-CS1/MADDR11
SD-BS
MADDR10
MADDR0
VDD
VSS
MADDR1
MADDR2
MADDR3
RESERVED
NC
NC
RESERVED
NC
RESERVED
RESERVED
RESERVED
DAI-LRCK
DAI-BCK
VDD
VSS
DAI-DATA
DA-DATA3
DA-DATA2
DA-DATA1
DA-DATA0
DA-LRCK
VDD
VSS
DA-XCK
DA-BCK
DA-IEC
VDDI/O
Description 2.Pin function (3/5)
SDRAM address
SDRAM address
Power supply terminal 2.5V
Connect to ground
SDRAM address
SDRAM write enable
Active LOW SDRAM column address
Power supply terminal 3.3V
Connect to ground
Active LOW SDRAM row address
Active LOW SDRAM chip select 0
Active LOW SDRAM chip select 1 or use as MADDR11 for larger SDRAM
SDRAM bank select
SDRAM address
SDRAM address
Power supply terminal 3.3V
Connect to ground
SDRAM address
SDRAM address
SDRAM address
Tie to VSS or VDD_3.3 as specified in table1
Non connect
Non connect
Tie to VSS or VDD_3.3 as specified in table1
Non connect
Tie to VSS or VDD_3.3 as specified in table1
Tie to VSS or VDD_3.3 as specified in table1
Tie to VSS or VDD_3.3 as specified in table1
PCM left/right clock
PCM input bit clock
Power supply 3.3V
Connect to ground
PCM data input
PCM data output. Eight channels. Serial audio samples relative to
DA_BCK and DA_LRCK
PCM data output. Eight channels. Serial audio samples relative to
DA_BCK and DA_LRCK
PCM data output. Eight channels. Serial audio samples relative to
DA_BCK and DA_LRCK
PCM data output. Eight channels. Serial audio samples relative to
DA_BCK and DA_LRCK
PCM left clock. Identifies the channel for each sample
Power supply terminal 3.3V
Connect to ground
Audio external frequency clock input or output
PCM bit clock output
PCM data out in IEC-958 format or compressed data out in IEC-1937 format
Power supply terminal 2.5V
